250 Megawatts = 250,000,000 Watts.
100 watts is great, 150 watts may be too loud for some, and there is higher watt amplifiers made.
That depends on what speakers or headphones the 6 watts is playing into. Watts is a measure of power, not of loudness.
250 Watts.
Yeah all you need is a completely friction less system.
Depends on the voltage. AMPS X VOLTS = WATTS 250 Watts at 12 V would be about 21 Amps, while 250 watts at 120 volts would be 2.1 amps.
1000 watts is not twice as loud as 500 watts, that is the first myth to break. But 1000 watts will sound superior because of something called headroom. The best way to think of it is in relation to room size. 1000 watts will not rock Glastonbury but it will do serious damage in a pub or medium to large hall.
http://www.google.com/search?rlz=1C1CHMB_enUS291US304&sourceid=chrome&ie=UTF-8&q=250+watts+to+horsepower
How loud or how many watts it has.
There is no way to convert 250 hz into Watts. Hertz refers to the frequency (cycles) of a signal. A Watt is a unit of power dissipation. No relationship . . . no conversion!
The newer PS3 slim models consume 250 watts for all HDD sizes
A 30 amp circuit on a 250 volt service could handle up to 7500 watts. That's if it's actually 250 volts coming in. You should check that with your meter.